Update docs to use #[component] instead of #[inline_props]

[tigerros]

This updates docs to reflect changes in DioxusLabs/dioxus#1448.

• Update docs to use #[component] instead of #[inline_props].
• Remove #![allow(non_snake_case)] when unnecessary because of #[component].
• Add #[component] to components that don't have it.
• Fix some typos.

The changes don't apply to posts/ and release notes. There might be mistakes (given the extremely broad scope of this), but I tried to check each file manually to adjust other factors instead of just globally replacing inline_props with component. For example, "...#[inline_props] allows you to..." should be "...#[component] also allows you to...", in reference to the fact that all components already use #[component].

The Dioxus versions also need to be updated, but I'm not sure what version will DioxusLabs/dioxus#1448 release in (which is a prerequisite to this being merged).

[tigerros]

To clarify, the checks are failing because the Dioxus version is still at 0.4.0, which obviously doesn't have the #[component] macro. That's why this is a draft PR. I'm waiting until DioxusLabs/dioxus#1448 gets published in 0.4.x and then I'll update this.

[ealmloff]

This was fixed in 19d8a5e